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Restructuring Activities - Additional Information (Detail) $ in Thousands |  |  |  |  |  | 12 Months Ended
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Sep. 25, 2017 Employee | Sep. 07, 2017 | Aug. 09, 2017 USD ($) | Jul. 17, 2017 | May 03, 2017 BusinessUnit | Dec. 30, 2017 USD ($) | Dec. 31, 2016 USD ($)
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |  |
Number of new organizational structure business units established | BusinessUnit |  |  |  |  |  | 2 |  |
Restructuring and related impairment charges | [1] |  |  |  |  |  | $ 104,130 |
Severance costs |  |  |  |  |  |  | 2,000 |
Reorganization Costs |  |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and related impairment charges |  |  |  |  |  |  | $ 1,925 |
Facility Closing | Warehouse Segment | Winston-Salem, North Carolina |  |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |  |
Closure of operations, description |  |  |  |  |  |  | On August 9, 2017, the company announced the closure of a Warehouse Segment snack cake plant in Winston-Salem, North Carolina. The bakery will close in November 2017. The closure costs were $4.4 million and consisted of $3.4 million for property, plant and equipment impairments and $1.0 million for employee termination benefits. These amounts are recorded in the restructuring and related impairment charges line item on our Consolidated Statements of Income. |
Closing date of bakery |  |  |  | Nov. 30, 2017 |  |  |  |
Facility closure cost |  |  |  | $ 4,400 |  |  |  |
Employee termination benefits |  |  |  | 1,000 |  |  |  |
Facility Closing | Warehouse Segment | Winston-Salem, North Carolina | Property, Plant and Equipment |  |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |  |
Property plant and equipment impairment |  |  |  | $ 3,400 |  |  | $ 3,400 |
Launch of Project Centennial |  |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring activities, expected completion year |  |  |  |  |  |  | 2021 |
Launch of Project Centennial | Reduce Costs to Fuel Growth |  |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |  |
Non-restructuring consulting costs |  |  |  |  |  |  | $ 37,300 | $ 6,300
Launch of Project Centennial | Develop Leading Capabilities |  |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |  |
Number of new organizational structure business units established | BusinessUnit |  |  |  |  |  | 2 |  |
Full implementation expected to be completed period |  |  |  |  |  |  | beginning of fiscal 2019. |
Launch of Project Centennial | Employee Severance | Voluntary Employee Separation Incentive Plan |  |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |  |
Voluntary employee separation incentive plan commencement date |  |  |  |  | Jul. 17, 2017 |  |  |
Election period closing date |  | Sep. 25, 2017 |  |  |  |  |  |
Approximate number of employees accepted offer | Employee |  | 325 |  |  |  |  |  |
Separations beginning date |  |  | Sep. 07, 2017 |  |  |  |  |
Restructuring charge paid during fiscal 2017 |  |  |  |  |  |  | $ 4,600 |
Launch of Project Centennial | Employee Severance | Restructuring Charges | Voluntary Employee Separation Incentive Plan |  |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |  |
Aggregate employee separation charge |  |  |  |  |  |  | 29,700 |
Launch of Project Centennial | Reinvigorate Core Business | Restructuring Charges |  |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |  |
Impairment charges of trademark assets |  |  |  |  |  |  | $ 66,200 |
[1] | Presented on our Consolidated Statements of Income.

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